package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.TeacherService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author AIR
 * @since 2022-09-07
 */
//@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
//@CrossOrigin
public class TeacherController {

    //把service注入
    @Autowired
    private TeacherService teacherService;

    //1 查询讲师所有数据
    //rest风格
    @GetMapping("findAllTeacher")
    public R findAllTeacher(){
        //调用service方法实现查询所有的操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);//条目(items)
    }

    @CacheEvict(value = "teacher",allEntries = true)
    //2 逻辑删除讲师方法
    @DeleteMapping("{id}")
    public R removeTeacher(@PathVariable("id") long id){
        boolean flag = teacherService.removeById(id);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }

    //分页查询讲师的方法
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable("current") long current,
                             @PathVariable("limit") long limit){
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

/*        try {
            int i = 10/0;
        }catch (Exception e){
            //执行自定义异常
            //手动抛出
            throw new GuliException(20001,"执行了自定义异常处理...");
        }*/

        //调用方法实现分页
        //调用方法时候，底层封装，把分页所有数据封装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal(); //总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //数据list集合

//        Map map = new HashMap();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);

        return R.ok().data("total",total).data("rows",records);
//        return R.ok().data("page",pageTeacher);
    }

    //4 条件查询带分页的方法
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable("current") long current,
                                  @PathVariable("limit") long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件组合查询
        //mybatis学过 动态sql
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(teacherQuery.getName())){
            wrapper.like("name",teacherQuery.getName());
        }
        if (!StringUtils.isEmpty(teacherQuery.getLevel())){
            wrapper.eq("level",teacherQuery.getLevel());
        }
        if (!StringUtils.isEmpty(teacherQuery.getBegin())){
            wrapper.ge("gmt_create",teacherQuery.getBegin());
        }
        if (!StringUtils.isEmpty(teacherQuery.getEnd())){
            wrapper.le("gmt_create",teacherQuery.getEnd());
        }

        //排序
        wrapper.orderByDesc("gmt_create");

        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);

        long total = pageTeacher.getTotal(); //总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); //数据list集合
        return R.ok().data("total",total).data("rows",records);
    }

    //添加讲师接口的方法
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher teacher){
        boolean save = teacherService.save(teacher);
        if (save){
            return R.ok();
        }else {
            return R.error();
        }
    }

    //根据讲师id进行查询
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable("id") String id){
        EduTeacher eduteacher = teacherService.getById(id);
        System.out.println(eduteacher);
        return R.ok().data("teacher",eduteacher);
    }

//    //讲师修改功能
//    @PostMapping("updateTeacher")
//    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
//        boolean flag = teacherService.updateById(eduTeacher);
//        if (flag){
//            return R.ok();
//        }else {
//            return R.error();
//        }
//    }

    @CacheEvict(value = "teacher",allEntries = true)
    @PutMapping("updateTeacherByPut/{id}")
    public R updateTeacherByPut(@PathVariable("id") String id,@RequestBody EduTeacher eduTeacher){
        eduTeacher.setId(id);
        boolean flag = teacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }
}
